A button can radically improve your click-through-rate. Want people to RSVP online? Create a button. Looking for feedback on your article? Create a button. Want to encourage readers to shop now? Create a button.

The challenge with HTML email is that we don't have many ways to build a button. Traditionally, you might create an image, and then hyperlink it. Another tactic on the web is to use JavaScript, but that won't work in email. That leaves us with the lowly text link.

However, using CSS you can make any text link look like a button. Here's is some sample HTML code: